AXIAL FAN FOR HEAT EXCHANGER VENTILATION

摘要

PROBLEM TO BE SOLVED: To provide an axial fan for a heat exchanger ventilation good in nature of mounting on a vehicle, capable of reducing cost and most efficient in air flow quantity and noise. SOLUTION: This invention relates to the axial fan for heat exchanger ventilation 1 provided closely to a cooling air outlet side of a heat exchanger 2. The axial fan for heat exchanger ventilation 1 is provided with a fan blade 5 rotatable by a drive motor 4 and a ring part 6 provided on an outer circumference of the fan blade 5 and having a bell mouth 7 formed in an cooling air inlet side and is constructed to secure ratio R/D of length of rise R in a radial direction of the bell mouth 7 to diameter D of the fan blade 5 in a range of 0.014-0.026. COPYRIGHT: (C)2005,JPO&NCIPI